Clamp



Feb. l2 1924.

T. BILLINGTON CLAMP Filed April s, 1923 m 12M/,ffm W Q,

ISO

Patented leb. l2?, i924.'

`.emanados inea anni e, .serieu No. eea-esi.

f1.' o uiZ 11i/ora it fmug/ concern l'e it known that l, Trrnori-rinos Birrerie;-

roN, a citizen et the United States, residing at Clearwater, in the county ot Pinellas and Dltate o and exact description of the invention, such.

as Will enable others skilled in the art to which it appertains to raalte and use the saine. y

fla/.ly invention relates to improvements in work clamps and has rtor :its object to provide an extremely simple and inexpensive constructionwhich will be highly eicient and desirable and may be readily adjusted Within Wide range. j

lll/ith the foregoing in view, the invention 'des in the `novel subject matter herein- ;f described andclaiined, the description being; supplemented by theaccompanying drawing.

Figure 1 is side elevation oit a clamp constructed in accordance with my invention.

. Figure 2 vieiv.

Figure 3 is a transverse sectional view as indicated by line 3 3 oi l, showing the movable jayv ot the clamp secured in adjusted position.

Figure l is a vioiv sirnilar to Fig. 3 but i llustrating` the movable jaiv released. y

VFigures 5 and 6 are sectional vieivs on lines 5--5 and 6 6 of l? 1.

ln the drawing above briefly described, the numeral 1 designates a straight shank preferably having a widened base portion 2, tho iti-ont end of this shanlz being directed upwardly to torni a bearing 3 through Which is a central longitudinal sectional a screw l is threaded for adjusting a javvA 5 Whose lower end is formed with a groove 6 receiving;- the upper edge ot the shank 1.

A relatively movable jaw 7 is provided With an opening S through which the shank 1 passes to permit said jaw to be adjusted along the shank. Below the shank, the jaw 7 provided With a yoke 9 which preferably consists of a Front plate 1.()7 a rear plate 1.1, and a bottom plate 12 connecting` the lovver edges ot said plates and 11. A cam 13 is received in the yoke 9 and when turned in one direction, is adapted to Wedge between the shank 1 and the bottom plate12 thus securing the movable 'jaw 7 in any position to which it has been moved. AL

though not absolutely essential, l pi clamping the Work.

provide one cani 13 and the shanlt 1, operating teeth 111- and 15.

longitudinal shaft 16 is provided under the slianl'lior rotating the cam 13, this shaft being preferably of the square crosssection shown. The shaft passes slidably through an opening 17 in the cani 13 and extends loosely through circular openings 18 in the front and rear plates 1.0 andr 11 ot the yoke 9., the front end of saidshatt being); slidably and rotatably received in a bearing;T 19 which depends from the front end ot the shank 1. While the rear `end of said shaft is siviveled at 2O in a bearing' 21 having a slide portion 22 which yengages the widened base 2 oi.' the shank 1. The trent end of the shaft 16 ris provided with an operating; handle 23 .tor operating the cam 13 and it will be seen that by pulling forwardly upon this handle, the slide 22 will strike the volte 9 and will vconserpiently shitt the movable jaw 7 forwardly to any desired extent. Thus, the jaW may be brought up against theivorl and by then turningr the shaft in the proper direction.` the cam 13 will Wedge between the plate 1 2 of the jaw 7 and the shank 1g thereby tightly holding said aiv in place. This having; been done, the shaft 16 may be slid rearwardly out o? the 'way and by ope i* the screw 1. it Will be seen that the 5 is made to co-operate with the jav 7 in tightly By providindv the construction shown or a substantial. equivalent thereof. it will be obvious that a very simple and desirable clamp has been. yprovided and :furthermore7 it Will be seen that by making): slight chang-es the clamp might be adapted 'tor use as a vise.

claim:

1. A clarnp comprising a shank having a relatively stationaryT adjacent its front end, said front end ot the shank having a 'bearing at the side et the shank opposite said jaw, a relatively movable slidable alongr said shank and having; a yolze at the last named side thereof@ a rotatable earn in said yoke to Wed betrveenv a portion ot th latter and saidshanl and hold sai d movable jaiv in adjusted position, and shaft for turningsaid cani, said s tt .Ktending rotatably through the aforesaid bearing` and havinoj hai die at its front end.

2. A clamp"coneprisiinr`r a shank having a relatively stationary jaiv adjacent its front end. said trout end of the shank, caving` a iio bearing at the side of the Shank opposite Said ava, a relatively inovable jaw slidable along sai-d shank and having a yoke at the last named Side thereof, a rotatable Cam in said voke to engage said shank and hold the movable jaw in adjusted position, a shait't for rotating' said earn,v said shaft passing slidably through said cam and slidably and rotatably through the aforesaid bearing, a seelo ond bearing in which the rear end o'lf the shaft is svviveled, ineans mounting said Seoond bearing on Said shank for Sliding along the latter, and a handle on the front end of said shaft for pulling` it forwardly to siinilarly move the movable jaw and Jfoi' rotating said shaft to operate said cam.

In testimony whereof I have hereunto aifixed my signatu'e.

THEOPHILUS BILLINGTON. 

